3Com NBX Communications System Planning Guide
Dial Plan
Extension Ranges
Default Extension Range
Telephones
NBX 100: 100-449
SuperStack 3 NBX: 1000-3999
Call Park
NBX 100: 601-609
SuperStack 3 NBX: 6000-6099
Auto Attendant
NBX 100: 500, 501, 500-599
SuperStack 3 NBX: 500, 501, 5500-5599
Hunt Groups
NBX 100: 450-499
SuperStack 3 NBX: 4000-4099
External
NBX 100: 600-799
SuperStack 3 NBX: 6000-7999
Paging
NBX 100: 620, 621, and 622
SuperStack 3 NBX: 6200, 6201, and 6202
Notes:
•
The extensions used for Call Park must be included in the External range. If they are not, the Park features do not work.
•
Do not change the reserved Auto Attendant extension numbers 500 and 501.
•
TAPI Route Point extensions are within the extension range for telephones.
•
See the Dial Plan chapter in the Administrator's Guide for more information.
•
The NBX 100 uses a default 3-digit dial plan. If you decide to import any 4-digit dial plan, you must manually modify any extension ranges not
updated by the imported dial plan.
•
The SuperStack 3 NBX uses a default 4-digit dial plan. If you decide to import any 3-digit dial plan, you must manually modify any extension
ranges not updated by the imported dial plan.
New Extension Range
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